CN101587256A - Electro-optical device and electronic apparatus - Google Patents
Electro-optical device and electronic apparatus Download PDFInfo
- Publication number
- CN101587256A CN101587256A CN200910203459.0A CN200910203459A CN101587256A CN 101587256 A CN101587256 A CN 101587256A CN 200910203459 A CN200910203459 A CN 200910203459A CN 101587256 A CN101587256 A CN 101587256A
- Authority
- CN
- China
- Prior art keywords
- light
- photo detector
- electro
- optical device
- display surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000758 substrate Substances 0.000 claims abstract description 60
- 230000035945 sensitivity Effects 0.000 claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims description 131
- 230000003287 optical effect Effects 0.000 claims description 41
- 239000004065 semiconductor Substances 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 12
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 97
- 238000001514 detection method Methods 0.000 description 30
- 230000009471 action Effects 0.000 description 24
- 210000002858 crystal cell Anatomy 0.000 description 14
- 241000150100 Margo Species 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- 230000003321 amplification Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 229920005591 polysilicon Polymers 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000003760 hair shine Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910021332 silicide Inorganic materials 0.000 description 2
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 2
- YBNMDCCMCLUHBL-UHFFFAOYSA-N (2,5-dioxopyrrolidin-1-yl) 4-pyren-1-ylbutanoate Chemical compound C=1C=C(C2=C34)C=CC3=CC=CC4=CC=C2C=1CCCC(=O)ON1C(=O)CCC1=O YBNMDCCMCLUHBL-UHFFFAOYSA-N 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000005388 cross polarization Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- GGYFMLJDMAMTAB-UHFFFAOYSA-N selanylidenelead Chemical compound [Pb]=[Se] GGYFMLJDMAMTAB-UHFFFAOYSA-N 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- BAZVSMNPJJMILC-UHFFFAOYSA-N triadimenol Chemical compound C1=NC=NN1C(C(O)C(C)(C)C)OC1=CC=C(Cl)C=C1 BAZVSMNPJJMILC-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/0304—Detection arrangements using opto-electronic means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Position Input By Displaying (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The present invention relates to an electro-optical device, such as a liquid crystal device having a touch panel function which allows a user to input various information via a display surface in a manner such that the user points the display surface with a pointing unit, such as a finger, and an electronic apparatus. An electro-optical device includes a plurality of pixel portions formed in a display region on a substrate, a first light-receiving element which is formed in the display region and shows light-receiving sensitivity with respect to an incident visible ray which enters a display surface, a second light-receiving element which is formed in the display region and shows light-receiving sensitivity with respect to an incident infrared ray which enters the display surface, and a detecting unit which detects a pointing unit which points the display surface on the basis of the light-receiving sensitivity with respect to the incident visible ray and the light-receiving sensitivity with respect to the incident infrared ray.
Description
Technical field
For example the present invention relates to by indicating mechanism's indicated number faces such as fingers and can import the electro-optical device such as the liquid-crystal apparatus with touch panel function of various information and possess the technical field of the electronic equipments such as direct viewing type display that such electro-optical device constitutes by this display surface.
Background technology
In liquid-crystal apparatus as an example of this electro-optical device, proposed on each of a plurality of pixel portions, or be to dispose optical sensor in one group every group with the pixel portions of any number, can realize showing, reaching the information input to this liquid-crystal apparatus, promptly have the liquid-crystal apparatus of so-called touch panel function by indicating mechanisms such as fingers based on the image that sees through light that sees through pixel portions.In such liquid-crystal apparatus, touch the display surface of liquid-crystal apparatus or on display surface, move by indicating mechanisms such as light sensors finger or indicating devices, can realize to this liquid-crystal apparatus input information.
In possessing the liquid-crystal apparatus of touch panel function, for example be configured in the viewing area of display image and optical sensor indicating mechanism's overlapping areas such as finger, in other words, be configured in the optical sensor with the shadow overlapping areas of indicating mechanism, detect the light quantity of the incident light corresponding with the shadow of indicating mechanism.Be configured in not with the optical sensor of indicating mechanism overlapping areas be incident light with the outer light that is not instructed to mechanism and covers, detect its light quantity, obtain in the gray shade scale of each image section corresponding and be provided with poor image with the difference of light quantity.Therefore, in this liquid-crystal apparatus, by detecting from the light quantity of the incident light of the display surface incident of display image, can based on according to by each light sensors to the light quantity of each incident light determined the image that image section constituted of gray shade scale, detect the position of indicating mechanism.According to non-patent literature 1, a kind of intensity at the outer light (visible light) that incides the viewing area is disclosed when high, shadow by indicating mechanisms such as detection fingers, detect the position and the shape of indicating mechanism, when the intensity of light (visible light) is low outside, by detecting the reflected light that from the light that display surface penetrates, is reflected, detect the position of indicating mechanism and the technology of shape by indicating mechanisms such as fingers.
In addition, according to patent documentation 1, disclose a kind of when indicating mechanisms such as detection finger, the magnitude relationship of the relative intensity of the demonstration light intensity that penetrates because of outer light intensity with from display surface becomes under the situation of difficult detection indicating mechanism, be instructed to the infrared light of mechanism reflection by detection, detect the technology of the position etc. of this indicating mechanism.
[non-patent literature 1] Touch Panel Function Integrated LCD Using LTPSTechnology, N.Nakamura et al, IDW/AD ' 05 is p.1003-1006
[patent documentation 1] spy opens the 2006-301864 communique
But, according to non-patent literature 1 disclosed technology, under the demonstration light intensity that penetrates from display surface and outer light intensity condition about equally, there are the catoptrical intensity and the mutual situation about equally of outer light intensity that are instructed to mechanism's reflection in the display light.In this case, be difficult to reach the poor of outer light intensity separately, zone and other zones of indication organizational overlapping in the viewing area are distinguished, produced the technical matterss such as position that are difficult to detect indicating mechanism based on reflected light.
In addition, according to patent documentation 1 disclosed technology, even in the detection of indicating mechanism, use infrared light, in the reflects infrared light that is waited indicating mechanism's reflection by finger and outside being contained under the infrared light intensity separately condition about equally in the light, the also same problem of generation and non-patent literature 1.
Promptly, detecting under the situation of indicating mechanisms such as finger by the light that detects specific wavelength, according to the environment for use of using electro-optical device, be difficult to obtain the accurate information of the position of determining indicating mechanism and shape etc. sometimes, be difficult to improve the detection sensitivity that detects indicating mechanism.
Summary of the invention
Thus, the present invention waits in view of the above problems and proposes, its purpose is, provides about the outer light intensity in the environment for use of for example not used this electro-optical device, has improved the electro-optical devices such as liquid-crystal apparatus with touch panel function of the detection sensitivity of indicating mechanism; And possesses such electro-optical device and the electronic equipments such as direct viewing type display that constitute.
In order to address the above problem, electro-optical device of the present invention possesses: a plurality of pixel portions are formed on the viewing area on the substrate; First photo detector is formed on above-mentioned viewing area, shows the luminous sensitivity that is subjected to for the incident visible light that incides display surface; Second photo detector is formed on above-mentioned viewing area, shows the luminous sensitivity that is subjected to for the incident infrared light that incides above-mentioned display surface; And testing agency, according to being subjected to luminous sensitivity and, detecting the indicating mechanism that above-mentioned display surface is indicated for above-mentioned incident visible light for the luminous sensitivity that is subjected to of above-mentioned incident infrared light.
According to electro-optical device of the present invention, for example be arranged in rectangular in the viewing area of a plurality of pixel portions on substrate.The brightness of a plurality of pixel portions is for example set according to the picture signal that is provided for each pixel portions when this electro-optical device action.Thus, can show the image corresponding in the viewing area of display surface with picture signal.
First photo detector is formed on above-mentioned viewing area, shows the luminous sensitivity that is subjected to for the incident visible light of the display surface that incides this electro-optical device.First photo detector shows the sensitivity for the incident visible light that incides display surface when this electro-optical device action.Here, incident visible light comprises the visible light component both sides that are not instructed to the visible light component that mechanism covers in the outer light or are instructed to mechanism's reflection.First photo detector constitutes, for example exportable photocurrent corresponding with the light intensity of incident visible light.
Second photo detector is formed on above-mentioned viewing area, shows the luminous sensitivity that is subjected to for the incident infrared light that incides above-mentioned display surface.Second photo detector shows the sensitivity for the incident infrared light that incides display surface when this electro-optical device action.Here, the incident infrared light comprises the infrared light composition both sides that are not instructed to the infrared light composition that mechanism covers in the outer light or are instructed to mechanism's reflection.Second photo detector constitutes, and for example exportable photocurrent corresponding with the light intensity of incident infrared light, is output current.
First photo detector like this and second photo detector are subjected to the mutual different mode of wave band of the light of luminous sensitivity according to expression, for example make various element design such as component construction, size or constituent material different mutually.
Testing agency is according to being subjected to luminous sensitivity, and for the luminous sensitivity that is subjected to of above-mentioned incident infrared light, detecting the indicating mechanisms such as finger that above-mentioned display surface is indicated for above-mentioned incident visible light.More specifically, for example testing agency is electrically connected respectively with first photo detector and second photo detector, and constituting can be according to the circuit part of various information such as the position of obtaining indicating mechanism from the output current of these element outputs and shape.
Therefore, according to the electro-optical device that the present invention relates to, because when this electro-optical device action, can be according to the position of indicating mechanism and shape etc., detect the incident visible light and the incident infrared light that incide display surface respectively, so with the wave band that uses detectable light is that the situation that an a kind of photo detector detects indicating mechanism is compared, and can improve the detection sensitivity of indicating mechanism.
More specifically, for example outside under the condition of light intensity, because in the indicating mechanism's overlapping areas in the viewing area, compare the visual light intensity step-down of incident with other zones, so hang down the amount of the intensity that is equivalent to reduce than the output current of first photo detector in other zones from the output current of first photo detector output.In indicating mechanism's overlapping areas in the viewing area, according to the amount of the infrared light intensity that penetrates towards display surface from indicating mechanisms such as fingers, the nonoverlapping zone of the strength ratio indicating mechanism of incident infrared light is high.Therefore, outside under the condition of light intensity, in indicating mechanism's overlapping areas in indication mechanism, can according to the reduction amount of the output current more corresponding than the reduction amount of the visual light intensity of incident of other field strength step-downs and with the viewing area in the corresponding output current sum of the infrared light intensity of incident in the zone of indication organizational overlapping, determine indicating mechanism more accurately.
In addition, under the condition a little less than the light, in the indicating mechanism's overlapping areas in the viewing area, detect the reflection visible light that is instructed to mechanism's reflection in the visible light that from the display light that display surface penetrates, comprises by first photo detector outside.And second photo detector detects the reflects infrared light that is instructed to mechanism's reflection from the display light that display surface penetrates in the infrared light that comprises.Thus, under the weak condition of light, the reflection visible light that is instructed to mechanism's reflection incides display surface as the incident visible light outside, and the reflects infrared light that is instructed to mechanism's reflection incides display surface as the incident infrared light.Here, set because of a little less than the outer light intensity and cause the visual light intensity of incident low, only can not determine the situation of the position etc. of indicating mechanism exactly by detection incident visible light.But, according to the electro-optical device that the present invention relates to, because will being instructed to the reflects infrared light of mechanism's reflection, second photo detector goes out as the incident infrared light detection, so can be based on and from the output current of first photo detector output in corresponding incident visible light, added corresponding incident infrared light and, detected indicating mechanism from total output current of the output current of second photo detector output.
In addition, same with the situation that can detect indicating mechanism under each condition of the condition of outer light intensity and weak condition more accurately, even light reaches under the display light intensity separately condition about equally of display surface ejaculation outside, also can be by detecting incident visible light and incident infrared light both sides, detect indicating mechanism according to output current from each photo detector output, thereby compare with the situation that only detects indicating mechanism, can obtain information more accurately at the position of indicating mechanism and shape etc. based on visible light.
Thus, according to the electro-optical device that the present invention relates to, for example can not be subjected to about outer light intensity reliable detection go out indicating mechanism, can improve the touch panel function of this electro-optical device.
In a mode of the electro-optical device that the present invention relates to, above-mentioned first photo detector and the electrical connection parallel with one another of above-mentioned second photo detector.
According to the manner, shine first photo detector and second photo detector respectively by incident visible light and the incident infrared light that incides display surface, can export output current from these photo detectors to testing agency respectively.And according to the manner, can be in these photo detectors shared bindiny mechanisms such as portion of terminal that first photo detector and second photo detector are electrically connected mutually can make the simple structure of being constructed to of electro-optical device.
In other modes of the electro-optical device that the present invention relates to, above-mentioned pixel portions has the pixel switch element, and this pixel switch is included in a semiconductor layer that forms on the layer on the aforesaid substrate with element; Above-mentioned first photo detector has first sensitive layer, and this first sensitive layer is formed in the part of another semiconductor layer that forms on the above-mentioned layer; Above-mentioned second photo detector has second sensitive layer that is formed on another layer different with an above-mentioned layer; An above-mentioned semiconductor layer and above-mentioned another semiconductor layer form by public mutually operation.
According to the manner, pixel switch for example is to contain a semiconductor layer being formed on the layer semiconductor elements such as TFT as active layer with element.First sensitive layer that first photo detector is had has for example constituted and has been formed with the part of another semiconductor layer that pixel switch forms with layer with a layer of the active layer of TFT.On the other hand, above-mentioned second photo detector has second sensitive layer that forms on another layer different with an above-mentioned layer.Therefore, first sensitive layer that first photo detector and second photo detector have respectively and second sensitive layer are being formed on the substrate on the different mutually layers.
Because an above-mentioned semiconductor layer and above-mentioned another semiconductor layer are formed on the layer on the substrate, so can form by common mutually operation.More specifically, for example after having formed semiconductor layers such as polysilicon layer on the layer, by becoming respectively according to this semiconductor layer and another semiconductor layer and the mode of pixel switch with the corresponding plane pattern of element and first sensitive layer layout separately, simultaneously or carry out patterning concurrently, can form by common mutually operation.
Therefore,, compare, can make the manufacturing course easy of electro-optical device with the situation that forms first photo detector and second photo detector by different operations according to the manner.
In another mode of the electro-optical device that the present invention relates to, possesses the visible light color filter, this visible light color filter is observed from above-mentioned second photo detector, be formed on above-mentioned display surface one side, and it is overlapping with above-mentioned second photo detector, to covering towards the visible light of above-mentioned display surface, and above-mentioned incident infrared light is seen through from aforesaid substrate.
According to the manner, when display image in the viewing area, the visible light color filter covers from the visible light of substrate towards display surface.Therefore, can prevent that the zone that is provided with second photo detector in the viewing area is shown as white (so-called blank the demonstration), can improve the demonstration grade based on the image of electro-optical device.
In another mode of the electro-optical device that the present invention relates to, also has light source mechanism, this light source mechanism is observed from aforesaid substrate, is configured in the opposition side of above-mentioned display surface, penetrates towards above-mentioned viewing area to comprise the different mutually a plurality of coloured light and the light source light of infrared light; Above-mentioned pixel portions has a plurality of sub-pixel portion, and this a plurality of sub-pixel portion has a plurality of color filters that above-mentioned a plurality of coloured light is seen through respectively respectively; Above-mentioned a plurality of sub-pixel portion has the optical modulation element that above-mentioned a plurality of coloured light are modulated respectively; At least one color filter of above-mentioned a plurality of color filters sees through above-mentioned infrared light.
According to the manner, owing to have a plurality of sub-pixel portion, this a plurality of sub-pixel portion has a plurality of color filters that above-mentioned a plurality of coloured light is seen through respectively respectively, so can for example show the coloured image that has used red light, green light and blue light corresponding to the driving of optical modulation elements such as liquid crystal cell.
And, because at least one color filter of above-mentioned a plurality of color filters can make above-mentioned infrared light see through, so when detecting indicating mechanism, can be to the infrared light that comprises in indicating mechanism's radiation source light.Infrared light to indicating mechanism's irradiation is instructed to mechanism's reflection, incides display surface as the incident infrared light.Therefore, even contain hardly in the light outside under the condition of infrared light, more specifically, for example the visual light intensity that comprises in the not only outer light under the weak situation of light outside is low, the also low condition of infrared light intensity that contains in the outer light can use the incident infrared light detection to go out indicating mechanism.
In the manner, above-mentioned light source mechanism is to use fluorescent material ultraviolet ray to be transformed to the fluorescent apparatus of above-mentioned light source light.
According to the manner, for example, can easily generate visible light and infrared light by selecting fluorescent material rightly at fluorescent apparatus such as cold-cathode tubes.
In the another way of the electro-optical device that the present invention relates to, above-mentioned light source mechanism contains the light-emitting device that with good grounds input current penetrates the light-emitting component of above-mentioned light source light.
According to the manner, can change the light source light intensity according to input current.Therefore, can easily change the visible light and the infrared light intensity that comprise in the light source light, so that can detect indicating mechanism according to outer light intensity.
In the another way of the electro-optical device that the present invention relates to, above-mentioned light-emitting component is an organic EL.
According to the manner, can set the luminescent properties of light-emitting device according to the selection and the layer formation condition of the luminescent material that constitutes luminescent layer.
In the manner, above-mentioned light-emitting component is a semiconductor light-emitting elements.
According to the manner, for example can use with the light emitting diode generation light source light of inorganic semiconductor layer as luminescent layer.According to the manner, especially the light emitting diode that has used inorganic semiconductor material to constitute by employing can stably penetrate infrared light when lighting of light-emitting device begins.
In the another way of the electro-optical device that the present invention relates to, above-mentioned pixel portions is made of a plurality of sub-pixel portion that sends mutually different a plurality of coloured light respectively; At least one sub-pixel portion of above-mentioned a plurality of sub-pixel portion has the light-emitting component that penetrates infrared light with a coloured light of above-mentioned a plurality of coloured light towards above-mentioned display surface side.
According to the manner, for example can pass through polychromatic light color displays such as red light, green light and blue light.Because at least one sub-pixel portion of above-mentioned a plurality of sub-pixel portion has the light-emitting component that penetrates infrared light with a coloured light of above-mentioned a plurality of coloured light towards above-mentioned display surface side, even, also can penetrate infrared light towards indicating mechanism from display surface so the element that sends the infrared light different with these a plurality of coloured light is not set.
In order to solve above-mentioned problem, the electronic equipment that the present invention relates to possesses the electro-optical device of the invention described above.
According to the electronic equipment that the present invention relates to, owing to possess the electro-optical device of the invention described above, so can realize having the various electronic equipments such as video recorder, videophone, POS terminal of mobile phone, electronic notebook, the word processor of various touch panel functions, find a view type or monitor direct viewing type.
Such effect of the present invention and other advantages can be understood from the embodiment of following explanation.
Description of drawings
Fig. 1 is the vertical view of liquid-crystal apparatus of first embodiment of the electro-optical device that the present invention relates to.
Fig. 2 is II-II ' sectional view of Fig. 1.
Fig. 3 is the block diagram of main circuit structure of liquid-crystal apparatus of first embodiment of the electro-optical device that the present invention relates to of expression.
Fig. 4 is the equivalent electrical circuit of image display area of liquid-crystal apparatus of first embodiment of the electro-optical device that the present invention relates to.
Fig. 5 is a circuit diagram of at length having represented the electrical structure of optical detection circuit portion.
Fig. 6 is the circuit diagram of the electrical structure of expression photo detector portion.
Fig. 7 is the diagrammatic top view of pixel portions of liquid-crystal apparatus of first embodiment of the electro-optical device that the present invention relates to of expression.
Fig. 8 is VIII-VIII ' sectional view of Fig. 7.
Fig. 9 is IX-IX ' sectional view of Fig. 7.
Figure 10 is X-X ' sectional view of Fig. 7.
Figure 11 is a part sectioned view of at length having represented the part in cross section shown in Figure 9.
Figure 12 is the sectional view of structure of various elements of at length having represented the part in cross section shown in Figure 10.
Figure 13 is a curve map of having represented the relative sensitivity of photo detector with respect to light wavelength.
Figure 14 is the complete list of relation of the output current of expression outer light intensity and each photo detector.
Figure 15 is the sectional view of major part of light-emitting device of second embodiment of the electro-optical device that the present invention relates to of expression.
Figure 16 is the stereographic map of an example of the electronic equipment that relates to of expression present embodiment.
Figure 17 is another routine stereographic map of the electronic equipment that relates to of expression present embodiment.
Among the figure: 1... liquid-crystal apparatus, 10...TFT array base palte, 16... alignment films, 20... counter substrate, 50... liquid crystal layer, 50a, 50b... liquid crystal cell, 72... pixel portions, 82... light quantity adjusting portion, 89... visible light color filter, 93,94... source electrode, 150... optical sensor portion, 183, the 184... contact hole, 191... photo detector portion, 191R, 191G, 191B, 192... photo detector, the 500... light-emitting device.
Embodiment
Below, with reference to accompanying drawing the electro-optical device that the present invention relates to and each embodiment of electronic equipment are described.
＜the first embodiment 〉
In the present embodiment, the example as the electro-optical device that the present invention relates to illustrates the liquid-crystal apparatus with touch panel function.
＜1-1: the one-piece construction of liquid-crystal apparatus 〉
At first, with reference to Fig. 1 and Fig. 2, the one-piece construction of the liquid-crystal apparatus 1 of present embodiment is described.Fig. 1 observes tft array substrate 10 and the vertical view of the liquid-crystal apparatus 1 of each inscape of forming at this tft array substrate 10 from counter substrate 20 sides, and Fig. 2 is II-II ' sectional view of Fig. 1.The liquid-crystal apparatus 1 that present embodiment relates to is driven by the tft active matrix type of drive with the driving circuit internally-arranged type.
Among Fig. 1 and Fig. 2, arranged opposite has tft array substrate 10 and counter substrate 20 in liquid-crystal apparatus 1.Between tft array substrate 10 and counter substrate 20, enclose liquid crystal layer 50 is arranged, tft array substrate 10 and counter substrate 20 are bonding mutually by the seal 52 that is arranged on sealing area, described sealing area is positioned at the viewing area that is provided with a plurality of pixel portions, be image display area 10a around.
The inboard of sealing area that is provided with and disposes seal 52 in counter substrate 20 sides is parallel, the light-proofness margo frontalis photomask 53 that the margo frontalis zone of image display area 10a is stipulated.Wherein, part or all of such margo frontalis photomask 53 also can be used as built-in photomask and is arranged on tft array substrate 10 sides.In addition, the neighboring area that has the periphery that is positioned at image display area 10a.In other words, in the present embodiment, will observe from the center of tft array substrate 10 especially and be defined as the neighboring area than this margo frontalis photomask 53 position in the outer part.
Liquid-crystal apparatus 1 has data line drive circuit 101, scan line drive circuit 104 and sensor sweep circuit 204.In the neighboring area, be arranged in the zone in the outside of the sealing area that disposes seal 52, one side be provided with data line drive circuit 101 and external circuit-connecting terminal 102 along tft array substrate 10.Scan line drive circuit 104 is configured to along covering with a side on the both sides of this one side adjacency and by margo frontalis photomask 53.Sensor is configured to across image display area 10a and scan line drive circuit 104 opposed with sweep circuit 204.Scan line drive circuit 104 and sensor, are electrically connected by forming many distributions 105 that covered by margo frontalis photomask 53 mutually with sweep circuit 204.
Neighboring area on tft array substrate 10 is formed with the control circuit portion 201 that comprises circuit part, and this circuit part is to handling from the output signal of optical sensor described later portion output, and by the amount of restriction of control light quantity adjusting portion control light quantity.A preferred control circuit portion 201 or the part as its function described later be subjected to optical signal processing circuit portion 215 and data line drive circuit 101 integrally formed so that with become simple being connected of image display area 10a.
External circuit-connecting terminal 102 is connected with the splicing ear that is arranged on flexible (FPC) substrate 200, and described flexible substrate 200 is the examples with the bindiny mechanism of external circuit and liquid-crystal apparatus 1 electrical connection.The backlight that liquid-crystal apparatus 1 had is carried backlight lamp control circuit 202 controls that are made of IC circuit etc. on FPC200.
In four bights of counter substrate 20, dispose as the Lead-through terminal up and down of 20 of tft array substrate 10 and counter substrate and bring into play the conduction element up and down 106 of function.On the other hand, on tft array substrate 10,, be provided with Lead-through terminal up and down with opposed zone, these bights.Thus, can obtain to conduct at tft array substrate 10 and 20 of counter substrate.
Among Fig. 2, on the tft array substrate 10, be formed with alignment films on the pixel electrode 9a after having formed distributions such as TFT that pixel switch uses and sweep trace, data line.On the other hand, on counter substrate 20, except opposite electrode 21, also be formed with the photomask 23 of lattice-shaped or striated, and then partly be formed with alignment films in the superiors.Liquid crystal layer 50 is made of the liquid crystal that has for example mixed one or more nematic crystals, between this a pair of alignment films, obtains the state of orientation of regulation.
Liquid-crystal apparatus 1 possesses: first Polarizer 301, second Polarizer 302 and as the backlight 206 of the example of " light source mechanism " of the present invention.First Polarizer 301 is configured on the counter substrate 20.Second Polarizer 302 downside in the figure of tft array substrate 10 is configured between backlight 206 and the tft array substrate 10.For liquid-crystal apparatus 1, when it moves, in the two sides of first Polarizer 301, be positioned at display image on the display surface 301s that does not close on counter substrate 20 sides.
In addition, on the tft array substrate 10 of Figure 1 and Figure 2, except circuit parts such as these data line drive circuits 101, scan line drive circuit 104, also can form to the picture signal on the image signal line take a sample and the sample circuit supplied with to data line, at the check circuit etc. of supplying with the pre-charge circuit of the precharging signal of assigned voltage levels, the quality that is used to check manufacturing this electro-optical device midway or when dispatching from the factory, defective etc. before the picture signal respectively to many data lines.
＜1-2: the circuit structure of liquid-crystal apparatus 〉
Then, with reference to Fig. 3, the circuit structure of liquid-crystal apparatus 1 is described.Fig. 3 is the block diagram of the main circuit structure of expression liquid-crystal apparatus 1.
In Fig. 3, liquid-crystal apparatus 1 has: data line drive circuit portion 101, scan line drive circuit portion 104, transducer sensitivity adjust circuit part 205, sensor with sweep circuit portion 204, be subjected to optical signal processing circuit portion 215, image processing circuit portion 216 and display part 110.Control circuit portion 201 shown in Figure 1 has transducer sensitivity and adjusts circuit part 205, is subjected to optical signal processing circuit portion 215 and image processing circuit portion 216 and constitutes.
Display part 110 constitutes by being arranged in rectangular a plurality of pixel portions 72 as described later.Data line drive circuit 101 and scan line drive circuit 104 are supplied with sweep signal and picture signal with predetermined timing to display part 110, drive each pixel portions.Sensor when the action of liquid-crystal apparatus 1, is supplied with the signal that is used to make the action of optical sensor described later portion with sweep circuit portion 204 to each optical sensor portion.
Be subjected to optical signal processing circuit portion 215 to constitute the example of " testing agency " of the present invention with image processing circuit portion 216.Handled by the light signal that is subjected to of the optical sensor portion output that is arranged on image display area 10a on 215 pairs of tft array substrates 10 of optical signal processing circuit portion.216 pairs in image processing circuit portion handles based on the view data that constitutes from the signal that disposes that supplied with by optical signal processing circuit portion 215.Can according to a plurality of optical sensor portion based on display part 110 had separately be subjected to light signal and definite image, under the situation of the indicating mechanisms such as finger that identification is indicated display surface 301s, image processing circuit portion 216 determines the position of the indicating mechanism that in image display area 10a display surface 301s indicated, and the position of the indicating mechanism that determined is outputed to external circuit portion as touching position information.On the other hand, under the situation of position that can not determine indicating mechanism, the corrected signal that image processing circuit portion 216 will be used to revise the sensitivity of optical sensor portion offers data line drive circuit 101.Based on this corrected signal, light quantity adjusting portion described later is regulated the amount of restriction of the light quantity throttling that makes incident light by the light quantity adjusting portion.
＜1-3: the concrete structure of liquid-crystal apparatus 〉
Then, with reference to Fig. 4 to Figure 11, the concrete structure of liquid-crystal apparatus 1 is at length described.Fig. 4 is the equivalent electrical circuit of various elements, distribution among the image display area 10a of liquid-crystal apparatus 1 etc.Fig. 5 is a circuit diagram of at length representing the electrical structure of optical detection circuit portion shown in Figure 4.Fig. 6 is the circuit diagram of the electrical structure of expression photo detector portion 191.Fig. 7 is the diagrammatic top view of pixel portions.Fig. 8 is VIII-VIII ' sectional view of Fig. 7.Fig. 9 is IX-IX ' sectional view of Fig. 7.Figure 10 is X-X ' sectional view of Fig. 7.Figure 11 is a part sectioned view of at length representing the part in cross section shown in Figure 9.Figure 12 is the sectional view of structure of various elements of at length representing the part in cross section shown in Figure 10.
In addition, in Fig. 4, represented optical detection circuit portion and on tft array substrate 10, helped the circuit structure of the part that image shows in a plurality of pixel portions with rectangular configuration in fact.In Fig. 7 to Figure 11, for each layer, each parts are made as the size of the degree that can discern on accompanying drawing, each layer, each parts use different engineer's scales to this.Though constituting photo detector 191R, 191G and the 191B of photo detector portion 191 physically is configured in respectively in each sub-pixel portion, but for convenience of explanation, in Fig. 4 and Fig. 5, illustrate with the state that is contained in the optical detection circuit portion 250 that is electrically connected with a plurality of sub-pixel 72R of portion, 72G and 72B respectively.
With reference to Fig. 4, the circuit structure of pixel portions 72 is described.Among Fig. 4, the rectangular a plurality of pixel portions 72 that form that constitute the image display area 10a of liquid-crystal apparatus 1 comprise respectively: show the red 72R of sub-pixel portion, show the green 72G of sub-pixel portion and show the blue 72B of sub-pixel portion.Thereby, liquid-crystal apparatus 1 be can color display display device.The 72R of sub-pixel portion, 72G and 72B are electrically connected with a plurality of optical detection circuit portion 250 that is formed on image display area 10a respectively.
The 72R of sub-pixel portion, 72G and 72B have respectively: pixel electrode 9a, as the TFT30 of the example of " pixel switch element " of the present invention, and as the liquid crystal cell 50a of the example of " optical modulation element " of the present invention.
TFT30 is electrically connected with pixel electrode 9a, when the action of liquid-crystal apparatus 1, pixel electrode 9a is carried out switch control.The data line 6a that is supplied to picture signal is electrically connected with the source electrode of TFT30.Be written to picture signal S1, S2 among the data line 6a ..., Sn can press the line sequentially feeding by this order, also can supply with by group for adjacent a plurality of data line 6a each other.
Be electrically connected with sweep trace 3a on the grid of TFT30, liquid-crystal apparatus 1 constitutes with predetermined timing, with sweep signal G1, G2 ..., Gm applies to sweep trace 3a pulse by the line order with this order.Pixel electrode 9a is electrically connected with the drain electrode of TFT30, by will connecting its switch with during certain as the TFT30 of on-off element, picture signal S1, the S2 that supplies with from data line 6a ..., Sn write with predetermined timing.Via pixel electrode 9a be written to the specified level in the liquid crystal picture signal S1, S2 ..., Sn, and counter substrate on be held between the opposite electrode that forms certain during.
Then, with reference to Fig. 5 and Fig. 6, the detailed circuit structure of optical detection circuit portion 250 is described.
In Fig. 5, optical detection circuit portion 250 possesses light quantity adjusting portion 82 and optical sensor portion 150.
Light quantity adjusting portion 82 has: liquid crystal cell 50b, adjusting are controlled TFT 130 and are accumulated electric capacity 170 and constitute.Light quantity adjusting portion 82 is included in each of a plurality of optical detection circuit portion 250, and under the control of control circuit portion 201, its action is controlled in image display area 10a independently of each other.
Grid and the source electrode of regulating control TFT 130 are electrically connected with sweep trace 3a and signal wire 6a1 respectively.Regulate control TFT 130 and constitute the selection signal of supplying with via sweep trace 3a by being supplied to, can switch its conducting and end.Regulate control TFT 130 according to its conducting by and supply with the conditioning signal that is supplied to via signal wire 6a to liquid crystal cell 50b.Liquid crystal cell 50b controls the state of orientation of lcd segment according to conditioning signal, thereby regulates the light quantity of the incident visible light that incides optical sensor portion 150.
Here, with reference to Fig. 6, the electrical structure of photo detector portion 191 is at length described.
As shown in Figure 6, photo detector portion 191 is made of photo detector 191R, the 191G and the 191B that are configured among each 72R of sub-pixel portion, 72G and the 72B.Photo detector 191R, 191G and 191B on electric formation, connection parallel with one another.Photo detector 191R, 191G and 191B accept to incide from display surface 301s the incident visible light of each sub-pixel portion respectively when the action of liquid-crystal apparatus 1. Photo detector 191R, 191G and 191B when the action of liquid-crystal apparatus 1, export with incide each sub-pixel portion in the corresponding output current of incident visible light.
In Fig. 5, the source electrode of the TFT163 that resets, grid and drain electrode respectively with photo detector portion 191 and photo detector 192, resetting is electrically connected with TFT154 with signal wire 350 and signal amplification.Source electrode, grid and drain electrode that signal amplifies with TFT154 are electrically connected with TFT155 with power lead 351, photo detector portion 191 and photo detector 192, output control respectively.Output control is amplified with TFT154, is selected signal wire 353 and read output signal line 6a2 to be electrically connected with signal respectively with source electrode, grid and the drain electrode of TFT155.
When liquid-crystal apparatus 1 action, when at least one photo detector of the photo detector 191R, the 191G that constitute photo detector portion 191 and 191B detects the incident visible light, export from this photo detector as output current by the photocurrent that this photo detector produces.When photo detector 192 detected the incident infrared light that incides display surface 301s, the photocurrent that is produced by photo detector 192 was output as output current.
The output current of exporting respectively from photo detector portion 191 and photo detector 192, control with TFT155 action separately with TFT154 and output with TFT163, voltage amplification according to resetting, be transformed into and photo detector portion 191 and the power lead 352 of photo detector 192 electrical connections and the corresponding signal of voltage V between node a, the signal after this conversion is read out signal wire 6a2 and reads.Therefore, be read out voltage V that signal wire 6a2 reads by the output current regulation of exporting respectively from photo detector portion 191 and photo detector 192.
Then, with reference to Fig. 7 to Figure 12, the concrete structure of liquid-crystal apparatus 1 is described.
In Fig. 7, pixel portions 72 has three sub-pixel portions 72R, 72G and 72B, photo detector 191R, 191G and 191B and the infrared light detection portion 251 of arranging along directions X.Photo detector 191R, 191G and 191B and infrared light detection portion 251 have constituted above-mentioned optical detection part 250.
The 72R of sub-pixel portion, 72G and 72B have peristome 73R, 73G and 73B respectively.The 72R of sub-pixel portion, 72G and 72B have the TFT30 that the action of each sub-pixel portion is carried out switch control respectively, when liquid-crystal apparatus 1 action, conducting according to TFT30 ends action, penetrate red light, green light and blue light from peristome 73R, 73G and 73B respectively, can carry out the demonstration of the coloured image that carries out based on liquid-crystal apparatus 1.
Infrared light detection portion 251 has the control of adjusting TFT 130, peristome 83 and TFT circuit part 80.Photo detector 192 disposes in the mode in the face of peristome 83, accepts to incide the incident infrared light of display surface 301s.TFT circuit part 80 comprises to reset and constitutes (with reference to Fig. 5) with TFT163, voltage amplification with TFT155 with TFT154 and output control, the opposite is controlled the action of the photo detector 192 of peristome 83 and photo detector 191R, 191G and 191B action separately, and the variation of the pairing voltage V of output current of will be corresponding to incident visible light and incident infrared light and being exported respectively by photo detector 191R, 191G and 191B and photo detector 192 is exported to read output signal line 6a2.
In Fig. 8 to Figure 10, liquid-crystal apparatus 1 possesses: photomask 11 and 153, be embedded to three kinds of color filter 154R, 154G among the planarization film 20a and 154B, visible light color filter 89, liquid crystal cell 50b, photo detector 191 and 192, as backlight 206, first Polarizer 301 and second Polarizer 302 of the example of " light source mechanism " of the present invention.
A plurality of sub-pixel 72R of portion, 72G and 72B have a plurality of color filter 154R, 154G and the 154B that red light, green light and blue light coloured light is separately seen through respectively.A plurality of color filter 154R, 154G and 154B make respectively by red light L1R, the green light L1G and the blue light L1B that comprise among the light source light L1 after the liquid crystal cell modulation corresponding with each sub-pixel portion to see through when liquid-crystal apparatus 1 action.Therefore, liquid-crystal apparatus 1 can show the coloured image that has used red light L1R, green light L1G and blue light L1B corresponding to the driving of liquid crystal cell.
And from red light L1R, the green light L1G of the 72R of sub-pixel portion, 72G and 72B ejaculation and the reflected light that is instructed to mechanism's reflection the blue light L1B, L2 incides peristome 73R, 73G and 73B from display surface 301s as the incident visible light respectively.Photo detector 191R, 191G and 191B detect incident visible light L2 respectively, output and the corresponding output current of incident visible light L2.
Therefore, have under the condition of infrared light even give up hardly in the light outside, particularly, for example outside under the weak condition of light intensity, the visible light L1R that comprises among the light source light L1, L1G and L1B and infrared light R1 are instructed to the composition of mechanism's reflection in separately, also, detected by photo detector 191R, 191G, 191B and 192 as incident visible light L2 and incident infrared light R2.Thus, can determine the position etc. of indicating mechanism.In addition, even outside under the condition that light intensity is strong, also can detect by photo detector 191R, 191G, 191B and photo detector 192, determine the position of indicating mechanism etc. by being contained in visible light in the outer light and infrared light respectively as incident visible light L2 and incident infrared light R2.
Wherein, in the present embodiment, backlight 206 is to use fluorescent material ultraviolet ray can be transformed into the fluorescent apparatus such as cold-cathode tube of light source light L1.According to such backlight 206,, can easily generate the light source light L1 that contains visible light and infrared light by selecting fluorescent material rightly.
In addition, in the present embodiment, backlight 206 also can be to comprise the light-emitting device that penetrates the light-emitting component of light source light L1 according to input current.According to such backlight 206, can be corresponding the intensity of input current change light source light L1.According to such backlight 206, can easily change visible light and the infrared light intensity that comprises in the light source light according to outer light intensity, thereby can detect indicating mechanism.Especially using under the situation of organic EL as the light-emitting component that constitutes backlight 206, can set the luminescent properties of backlight 206 according to the selection and the layer formation condition of the luminescent material that constitutes luminescent layer.More specifically, can set red light L1R, green light L1G, blue light L1B and the infrared light R1 wavelength separately that comprises among the light source light L1 meticulously.In addition, the light-emitting component of formation backlight 206 also can be with the semiconductor light-emitting elements such as light emitting diode of inorganic semiconductor layer as luminescent layer.According to such semiconductor light-emitting elements, can when beginning, lighting of backlight 206 stably penetrate infrared light R1.
Visible light color filter 89 is observed from photo detector 192, be formed on display surface 301s side, and according in peristome 83, being embedded in the alignment films 22, visible light is covered, incident infrared light R2 is seen through towards photo detector 192 from display surface 301s with the overlapping mode of photo detector 192.
According to visible light color filter 89, when display image in image display area 10a, can cover from the visible light of tft array substrate 10 towards display surface 301s.Therefore, when liquid-crystal apparatus 1 action, can prevent that peristome 83 is shown as white (so-called blank the demonstration), can improve the demonstration grade of the image of liquid-crystal apparatus 1.
The not shown polarizing layer and first polarizing layer 301 that are configured between photo detector 191R, 191G, 191B and photo detector 192 and the liquid crystal layer 50 dispose with the cross one another mode cross polarization of optical axis separately (crossed nicols).
Light quantity adjusting portion 82 is as the throttle mechanism performance function to regulating to the light quantity of the incident light L2 of peristome 83 incidents from display surface 301s.In the present embodiment, as reference Fig. 5 illustrates, owing to can control the state of orientation of the lcd segment that liquid crystal cell 50b had, so can regulate the light quantity of incident light L2 independently by light quantity adjusting portion 82.Therefore, with to control the situation that shows the light intensity use up by the state of orientation of control liquid crystal layer in each pixel portions same, according to pixels portion regulates the intensity towards the incident visible light L2 of photo detector 192 of each optical sensor portion 150 independently of each other.Thus, owing to can before incident visible light L2 incides visible light color filter 89, weaken the intensity of this incident visible light L2, can not arrive photo detector 192 by the visible light component of visible light color filter 89 shadings so can reduce.Therefore, can reduce, can improve the accuracy of detection of indicating mechanism because of visible light shines the noise that photo detector 192 produces.
Liquid-crystal apparatus 1 has second polarizing layer 302, and this second polarizing layer 302 extends according to observing from liquid crystal layer 50 in the overlapping mode of tft array substrate 10 sides and pixel electrode 9a.Second polarizing layer 302 has the optical axis that extends along the direction of the optical axis extending of above-mentioned not shown polarizing layer.Therefore, according to second polarizing layer 302, can make the light source light L1 linear polarization that incides each pixel portions.
Wherein, first polarizing layer 301 and second polarizing layer 302 constitute by PVA (polyvinyl alcohol (PVA)) film that the protective film clamping that is made of TAC (Triafol T) has been extended.
As Fig. 8 and shown in Figure 9, photomask 153 is black matrixes of what is called that at least a portion at the edge of peristome 73R, 73G and 73B is stipulated.Therefore, by photomask 153, can reduce from display surface 301s side direction pixel switch with semiconductor elements such as TFT30, and irradiation incident visible light L2 of TFT circuit part 80, can reduce the light leakage current that semiconductor element produced that comprises in TFT30 and the TFT circuit part 80.
Liquid-crystal apparatus 1 possesses the photomask 11 of the lower layer side that is formed at photo detector 191R, 191G, 191B and photo detector 192 on tft array substrate 10.Photomask 11 is made of the material that metal film etc. has light-proofness, light source light L1 is covered, so that the light source light L1 that penetrates from backlight 206 is not irradiated to photo detector 191R, 191G, 191B and 192.Therefore, by photomask 11, can reduce because of light source light L1 shining the noise that each photo detector produces.
And photomask 11 is according to not extending on tft array substrate 10 with the overlapping mode of TFT30 with TFT circuit part 80 and pixel switch.Therefore, by photomask 11, also can also reduce the misoperation of TFT30 and TFT circuit part 80 with pixel switch with TFT30 and 80 shadings of TFT circuit part.
Then, with reference to Figure 11 and Figure 12, the detailed structure and the configuration of photo detector 191R, 191G, 191B and photo detector 192 described.Wherein, because photo detector 191R, 191G and 191B have common structure mutually respectively, so, for photo detector 191R, 191G and 191B, only explain 191B.
In Figure 11, photo detector 191B overlooks the mode of observing down according to facing with peristome 73B and is formed on the tft array substrate 10.
In Figure 12, photo detector 192 is the sensitive layer 192a ' that have as an example of " second sensitive layer " invented; Overlapping with sensitive layer 192a ' respectively with two sides at sensitive layer 192a ', and the longitudinal type PIN diode of the P-type conduction that is electrically connected with sensitive layer 192a ' zone 192b ' and N type conductive region 192c '.Therefore, when the manufacturing of liquid-crystal apparatus 1,, can easily form photo detector 192 at tft array substrate 10 by forming P-type conduction zone 192b ', sensitive layer 192a ' and N type conductive region 192c ' successively.
Get back to Figure 11 once more, dielectric film 41 is examples of " layer " of the present invention, the example that the semiconductor layer 1a that TFT30 had is formed in " semiconductor layer " on the dielectric film 41, of the present invention.Photo detector 191B has the semiconductor layer 191a of an example of the conduct that is formed on the dielectric film 41 " another semiconductor layer " of the present invention.Therefore, semiconductor layer 1a and 191a can form by common mutually operation in the manufacturing of liquid-crystal apparatus 1 is handled.More specifically, semiconductor layer 1a and 191a are for example by after having formed semiconductor layers such as polysilicon layer on the dielectric film 41, simultaneously or and be about to this semiconductor layer patternization, so that it becomes and TFT30 and the corresponding plane pattern of sensitive layer 191a layout separately, thereby can form simultaneously or concurrently.Therefore, and compare, can make the manufacturing of liquid-crystal apparatus 1 handle easy with the situation that the operation that forms semiconductor layer 1a is provided with the operation that forms semiconductor layer 191a independently.
The semiconductor layer 1a that TFT30 had for example is a low-temperature polycrystalline silicon layer, comprises and gate electrode 3a1 trench overlapped zone 1a ', source region 1b ' and drain region 1c '.In channel region 1a ', when liquid-crystal apparatus 1 action, form raceway groove by electric field from the gate electrode 3a1 that is electrically connected with sweep trace 3a.Constitute part among the dielectric film 42a of a part of dielectric film 42, that between gate electrode 3a1 and semiconductor layer 1a, extend, constituted the gate insulating film of TFT30.Source region 1b ' and drain region 1c ' form symmetrically at the both sides of channel region 1a ' mirror image respectively.
Gate electrode 3a1 by conducting films such as polysilicon films, comprise at least a metal monomer in the metals such as Ti, Cr, W, Ta, Mo, Pd, Al for example, alloy, metal silicide, poly-silicide or material that they are laminated etc. forms, not reach the overlapping mode of drain region 1c ', be arranged on the channel region 1a ' across dielectric film 42a with source region 1b '.
In addition, TFT30 can have LDD (the Lightly Doped Drain) structure that is formed with low concentration source region and low concentration drain region at source region 1b ' and drain region 1c ' respectively.
Contact hole 181 and 182 forms respectively, and dielectric film 42a and the 42b that constitutes dielectric film 42 penetrated into semiconductor layer 1a, and is electrically connected with source region 1b ' and drain region 1c ' respectively.Source electrode 91 and drain electrode 92 are respectively formed on the dielectric film 42b, and are electrically connected with contact hole 181 and 182 respectively.Source electrode 91 and drain electrode 92 are insulated film 43a respectively and cover, and drain electrode 92 is electrically connected with pixel electrode 9a by contact hole.
Get back to Figure 12 once more, photo detector 192 has the sensitive layer 192a ' on the dielectric film 43 of an example that is formed on the conduct different with dielectric film 41 " another layer " of the present invention, forms this photo detector portion 192 after photo detector 191 is formed on the dielectric film 41.
The P-type conduction zone 192b ' that is formed among photo detector 192 and P-type conduction zone 192b ' and the N type conductive region 192c ' under the sensitive layer 192a ' is overlapping, and is electrically connected with conducting film 199 under the 192b ' of P-type conduction zone.Conducting film 199 is made of transparent conductive materials such as ITO.
Then, with reference to Figure 13, photo detector 191B and photo detector 192 luminous sensitivity that is subjected to are separately described.Figure 13 has represented photo detector 191B and the 192 relative sensitivity performance plot that is subjected to luminous sensitivity separately with the relative sensitivity relevant with light wavelength.Here, relative sensitivity is that the luminous sensitivity that is subjected to the maximum of each element is a benchmark, has represented each photo detector index that is subjected to luminous sensitivity of light relatively, is an example of " being subjected to luminous sensitivity " of the present invention.Therefore please be careful, in a photo detector,, compare relative sensitivity mutually at different mutually interelements and do not have meaning physically though can compare relative sensitivity mutually with respect to each wavelength of light.
In Figure 13, photo detector 191B, promptly can detect the light-emitting component of visible light, can detect the light that wavelength is included in the scope of 200nm～1000nm.Photo detector 192, promptly the photo detector of infrared light can be detected, the light that wavelength is included in the scope of 900nm～1800nm can be detected.Here, photo detector 191B and 192 relative sensitivity characteristic separately has the wavelength interdependence that changes with respect to light wavelength.As shown in figure 13, the peak value of the relative sensitivity of photo detector 191B is present in light wavelength and is about near the 500nm.The peak value of the relative sensitivity of photo detector 192 is present in light wavelength and is about near the 1600nm.And photo detector 191B and 192 relative sensitivity separately is overlapping hardly.Therefore, the light that is in the non-detectable wavelength coverage of photo detector 191B can be detected by photo detector 192, and the light that is in photo detector 192 non-detectable wavelength coverages can be detected by photo detector 191B.By utilizing this two kinds of photo detectors, detect the incident visible light L2 and the incident infrared light R2 that incide display surface 301s, only can improve the accuracy of detection of the indicating mechanism that is difficult to improve by a side who detects visible light and infrared light.In addition, in the present embodiment, the wavelength of incident visible light L2 preferably is contained in the wavelength coverage of 400nm～700nm.And preferably the wavelength of incident infrared light R2 is included in the interior near infrared light of scope of 800nm～1000nm.
In addition, constitute photo detector 191R, 191G and the 191B and the photo detector 192 of photo detector portion 191, need only the different mode of wave band that is subjected to the light of luminous sensitivity according to expression, for example make mutual different the getting final product of various element design such as component construction, size or constituent material.
Then, with reference to Figure 14, situation that light intensity is strong and the weak situation situation of carrying out is divided in addition, illustrates from the output current of photo detector portion 191 and photo detector 192 outputs.Figure 14 be beyond the strong situation of light intensity and the weak situation situation of carrying out divide, represent always to be subjected to light output, promptly from the complete list of total output current of 191B of photo detector portion and photo detector 192 outputs.
As shown in figure 14, outside under the situation of light intensity height (becoming clear), the indicated zone of indicating mechanism from be configured in image display area 10a, be the output current I1 ' of photo detector portion 191 outputs of institute of the indicating mechanism overlapping areas among the image display area 10a, become than value from the output current low current I1 of photo detector portion 191 outputs that are configured in the nonoverlapping zone of indicating mechanism.This be because, light is instructed in the zone that mechanism covers outside, the strength ratio of incident visible light L2 that arrives photo detector portion 191 is low around it.
Outside under the situation that light intensity is high, the indicated zone of indicating mechanism from be configured in image display area 10a, be the output current I2+I2 ' of photo detector 192 outputs of institute of the indicating mechanism overlapping areas among the image display area 10a, become than value from the high electric current I 2 of output current I2 ' of photo detector 192 outputs that are configured in the nonoverlapping zone of indicating mechanism.This be because, light is instructed in the zone that mechanism covers outside, the infrared light R1 that penetrates from display surface 301s is instructed to mechanism's reflection, arrives photo detector 192 as incident infrared light R2, the nonoverlapping zone of the strength ratio indicating mechanism of incident infrared light R2 is high thus.
Therefore, export by the light that always is subjected to that handled by optical signal processing circuit portion 215 and image processing circuit portion 216, be output current I1+I2 for the position of determining indicating mechanism etc.Thus, outside under the condition of light intensity, reduction amount (promptly reducing electric current I 1) and output current I2 sum based on output current, can determine indicating mechanism more accurately, in the reduction amount of described output current and institute of the indicating mechanism overlapping areas in image display area 10a, amount correspondences that other zones of the strength ratio of incident visible light L2 reduce, the corresponding increase of intensity of the incident infrared light R2 among described output current I2 and the image display area 10a in institute of the indicating mechanism overlapping areas.Therefore, and only determine that based on electric current I 1 situation of the position etc. of indicating mechanism compares, can determine indicating mechanism exactly, described electric current I 1 corresponding incident visible light is regionally hanged down these situations and is output than other.
Then, outside under the situation of light intensity low (secretly), the indicated zone of indicating mechanism from be configured in image display area 10a, be the output current I3 of photo detector portion 191 outputs of the indicating mechanism's overlapping areas among the image display area 10a, become than value from the output off current HIGH electric current I 3 of photo detector portion 191 outputs that are configured in the nonoverlapping zone of indicating mechanism.This be because, the reflected light that is instructed to mechanism's reflection from the visible light L1 that display surface 301s penetrates, L2 is detected by photo detector portion 191 as the incident visible light.
Outside under the situation of light intensity low (secretly), the indicated zone of indicating mechanism from be configured in image display area 10a, be the output current I4 of photo detector 192 outputs of the indicating mechanism's overlapping areas among the image display area 10a, become than value from the output off current HIGH electric current I 4 of photo detector 192 outputs that are configured in the nonoverlapping zone of indicating mechanism.This be because, light is instructed in the zone that mechanism covers outside, the infrared light R1 that penetrates from display surface 301s is instructed to mechanism's reflection, arrives photo detector 192 as incident infrared light R2.
Therefore, outside under the situation that light is low, export by the light that always is subjected to that handled by optical signal processing circuit portion 215 and image processing circuit portion 216, be output current I3+I4 for the position of determining indicating mechanism etc.Thus, determine that with the electric current I 3 that only is output the situation of the position etc. of indicating mechanism is compared, can increase and exported by light, can determine indicating mechanism exactly based on corresponding visible light.
And, according to liquid-crystal apparatus 1, same with the situation that can detect indicating mechanism under each condition of the condition of outer light intensity and weak condition more accurately, even light reaches under the display light intensity separately condition about equally of display surface 301s ejaculation outside, also can be by detecting incident visible light L2 and incident infrared light R2 both sides, compare with the situation that only detects indicating mechanism, obtain information more accurately at the position of indicating mechanism and shape etc. based on visible light.
Therefore, the liquid-crystal apparatus 1 related according to present embodiment, because when liquid-crystal apparatus 1 action, can according to the position of indicating mechanism and shape etc. detect the incident visible light L2 that incides display surface 301s respectively and incident infrared light R2 each, so, with the wave band that uses the light that can detect is that the situation that an a kind of photo detector detects indicating mechanism is compared, and can improve the detection sensitivity of indicating mechanism.
Thus, the liquid-crystal apparatus 1 related according to present embodiment for example can detect indicating mechanisms such as finger reliably under the situation about light intensity outside not being subjected to, can improve the touch panel function of liquid-crystal apparatus 1.
＜the second embodiment 〉
Then, with reference to Figure 15, the light-emitting device 500 of another embodiment of the electro-optical device of present embodiment is described.Figure 15 is the part sectioned view of structure of the major part of the light-emitting device 500 that relates to of expression present embodiment.Wherein, below to giving common Reference numeral with the common part of above-mentioned liquid-crystal apparatus 1, and omit detailed explanation.
In Figure 15, light-emitting device 500 has pixel portions 72, and this pixel portions 72 comprises different a plurality of sub-pixel 72R of portion, 72G and the 72B that can penetrate red light L1R, green light L1G and blue light L1B respectively mutually.
A plurality of sub-pixel 72R of portion, 72G and 72B have light-emitting component 207R, light-emitting component 207G that penetrates green light L1G that penetrates red light L1R and the light-emitting component 207B that penetrates blue light L1B respectively.By these three kinds of coloured light, light-emitting device 500 can be on display surface 301s color display.
A plurality of sub-pixel 72R of portion, 72G and 72B have photo detector 191R, 191G and the 191B that can detect incident visible light L2 respectively.Therefore, light-emitting device 500 and above-mentioned liquid-crystal apparatus 1 are same, can detect incident visible light L2 when it moves.
A plurality of light-emitting component 207R, 207G and 207B are respectively organic EL or semiconductor light-emitting-diode for example, as display light, can penetrate infrared light R1 towards display surface 301s side with the coloured light that each light-emitting component should penetrate.
Therefore, according to light-emitting device 500, can be not with being that purpose penetrates the element of infrared light and these light-emitting components 207R, 207G and 207B and is provided with independently to detect the indicating mechanisms such as finger that display surface 301s is indicated, can make the apparatus structure easy.In addition, can penetrate infrared light, then can make the features simple structureization of light-emitting device 500 if at least one element of photo detector 191R, 191G and 191B constituted.
Light-emitting device 500 is same with above-mentioned liquid-crystal apparatus 1, has photo detector 191R, 191G and 191B that can detect incident visible light L2 and the light-emitting component 192 that can detect incident infrared light R2.Therefore, same with above-mentioned liquid-crystal apparatus 1, can export based on being detected the light of exporting that always is subjected to by each photo detector respectively by incident visible light L2 and incident infrared light R2, determine the information such as position of indicating mechanism more accurately.And, light-emitting device 500 with tft array substrate 10 on the overlapping mode of the peristome that disposes photo detector 192 83, be provided with visible light color filter 89, can reduce incident visible light L2 towards photo detector 192 irradiations.Therefore, the noise that in photo detector 192, produces because of illuminated incident visible light L2 can be reduced, the accuracy of detection of indicating mechanism can be improved.
＜electronic equipment 〉
Then, with reference to Figure 16 and Figure 17, the embodiment of the electronic equipment that possesses above-mentioned liquid-crystal apparatus is described.
Figure 16 is a stereographic map of having used the pocket pc of above-mentioned electro-optical device.In Figure 16, computer 1200 is made of main part 1204 that possesses keyboard 1202 and the display unit 1206 that comprises above-mentioned liquid-crystal apparatus.Display unit 1206 has the touch panel function that can import various information exactly by constituting at the additional backlight in the back side of display panel 1005.
Then, the example that above-mentioned liquid-crystal apparatus is applied to mobile phone is described.Figure 17 is the stereographic map as the mobile phone of an example of the electronic equipment of present embodiment.In Figure 17, mobile phone 1300 has a plurality of action buttons 1302 and has adopted infiltration type display format and had liquid-crystal apparatus 1005 with the same structure of above-mentioned liquid-crystal apparatus.According to mobile phone 1300, can carry out high-grade image and show, and can be by indicating mechanisms such as fingers via display surface input information exactly.In addition, except liquid-crystal apparatus, also above-mentioned light-emitting device can be applied in the various electronic equipments certainly, same with the situation of having used liquid-crystal apparatus, can further improve the touch panel function of electronic equipment.
Claims (11)
1, a kind of electro-optical device is characterized in that, possesses:
A plurality of pixel portions are formed on the viewing area on the substrate;
First photo detector is formed on described viewing area, shows the luminous sensitivity that is subjected to for the incident visible light that incides display surface;
Second photo detector is formed on described viewing area, shows the luminous sensitivity that is subjected to for the incident infrared light that incides described display surface; With
Testing agency is according to being subjected to luminous sensitivity and for the luminous sensitivity that is subjected to of described incident infrared light, detecting the indicating mechanism that described display surface is indicated for described incident visible light.
2, electro-optical device according to claim 1 is characterized in that,
Described first photo detector and the electrical connection parallel with one another of described second photo detector.
3, electro-optical device according to claim 1 and 2 is characterized in that,
Described pixel portions has the pixel switch element, and this pixel switch is included in a semiconductor layer that forms on the layer on the described substrate with element;
Described first photo detector has first sensitive layer, and this first sensitive layer is formed in the part of another semiconductor layer that forms on the described layer;
Described second photo detector has second sensitive layer, and this second sensitive layer is formed on another layer different with a described layer;
A described semiconductor layer and described another semiconductor layer form by public mutually operation.
4, according to any described electro-optical device in the claim 1～3, it is characterized in that,
Possesses the visible light color filter, this visible light color filter is observed from described second photo detector, is formed on described display surface one side, and overlapping with described second photo detector, to covering towards the visible light of described display surface, and described incident infrared light is seen through from described substrate.
5, according to any described electro-optical device in the claim 1～4, it is characterized in that,
Also have light source mechanism, this light source mechanism is observed from described substrate, is configured in the opposition side of described display surface, penetrates towards described viewing area to comprise the different mutually a plurality of coloured light and the light source light of infrared light;
Described pixel portions has a plurality of sub-pixel portion, and this a plurality of sub-pixel portion has a plurality of color filters that described a plurality of coloured light is seen through respectively respectively;
Described a plurality of sub-pixel portion has the optical modulation element that described a plurality of coloured light are modulated respectively;
At least one color filter of described a plurality of color filters sees through described infrared light.
6, electro-optical device according to claim 5 is characterized in that,
Described light source mechanism is to use fluorescent material ultraviolet ray to be transformed to the fluorescent apparatus of described light source light.
7, electro-optical device according to claim 5 is characterized in that,
Described light source mechanism contains the light-emitting device that with good grounds input current penetrates the light-emitting component of described light source light.
8, electro-optical device according to claim 7 is characterized in that,
Described light-emitting component is an organic EL.
9, electro-optical device according to claim 7 is characterized in that,
Described light-emitting component is a semiconductor light-emitting elements.
10, according to any described electro-optical device in the claim 1～4, it is characterized in that,
Described pixel portions is made of a plurality of sub-pixel portion that sends mutually different a plurality of coloured light respectively;
At least one sub-pixel portion of described a plurality of sub-pixel portion has the light-emitting component that penetrates infrared light with a shade of described a plurality of coloured light towards described display surface side.
11, a kind of electronic equipment is characterized in that,
Possesses any described electro-optical device in the claim 1～10.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008-134374 | 2008-05-22 | ||
| JP2008134374A JP5175136B2 (en) | 2008-05-22 | 2008-05-22 | Electro-optical device and electronic apparatus |
| JP2008134374 | 2008-05-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101587256A true CN101587256A (en) | 2009-11-25 |
| CN101587256B CN101587256B (en) | 2013-09-11 |
Family
ID=41341751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910203459.0A Expired - Fee Related CN101587256B (en) | 2008-05-22 | 2009-05-21 | Electro-optical device and electronic apparatus |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8446390B2 (en) |
| JP (1) | JP5175136B2 (en) |
| KR (1) | KR101587284B1 (en) |
| CN (1) | CN101587256B (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129326A (en) * | 2010-01-19 | 2011-07-20 | 原相科技股份有限公司 | Positioning method for optical touch device and optical touch device |
| CN102652279A (en) * | 2009-12-09 | 2012-08-29 | 夏普株式会社 | Display device |
| CN104238832A (en) * | 2014-08-26 | 2014-12-24 | 合肥鑫晟光电科技有限公司 | Light touch panel, light touch display screen and light touch display device |
| WO2014205931A1 (en) * | 2013-06-26 | 2014-12-31 | 京东方科技集团股份有限公司 | Active-matrix organic light-emitting diode pixel unit circuit, display panel, and electronic product |
| CN104375720A (en) * | 2014-11-26 | 2015-02-25 | 昆山国显光电有限公司 | Touch screen device |
| US8994693B2 (en) | 2009-11-16 | 2015-03-31 | Pixart Imaging Inc. | Locating method of optical touch device and optical touch device |
| US9459721B2 (en) | 2013-06-26 | 2016-10-04 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Active matrix organic light emitting diode pixel unit circuit, display panel and electronic product |
| US9501170B2 (en) | 2013-07-01 | 2016-11-22 | Boe Technology Group Co., Ltd. | Pixel circuit, display device, and method for driving pixel circuit |
| CN106210461A (en) * | 2015-05-29 | 2016-12-07 | 精工爱普生株式会社 | Camera head, the control method of camera head |
| US9530354B2 (en) | 2013-06-26 | 2016-12-27 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Active matrix organic light emitting diode pixel unit circuit and display panel |
| WO2020062781A1 (en) * | 2018-09-29 | 2020-04-02 | Boe Technology Group Co., Ltd. | Method for detecting biometric information, biometric sensor, and display apparatus |
| CN111179865A (en) * | 2018-11-13 | 2020-05-19 | 咸阳彩虹光电科技有限公司 | Display panel and display method |
| WO2022007094A1 (en) * | 2020-07-08 | 2022-01-13 | 深圳市华星光电半导体显示技术有限公司 | Display device and control method therefor |
| TWI761972B (en) * | 2019-09-30 | 2022-04-21 | 南韓商樂金顯示科技股份有限公司 | Display device |
| US11756330B2 (en) | 2018-09-29 | 2023-09-12 | Boe Technology Group Co., Ltd. | Biometric sensor, display apparatus, and method for detecting biometric information |
Families Citing this family (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8587562B2 (en) * | 2002-11-04 | 2013-11-19 | Neonode Inc. | Light-based touch screen using elliptical and parabolic reflectors |
| KR101020903B1 (en) * | 2008-08-06 | 2011-03-09 | 엘지이노텍 주식회사 | Transmitting device, display device and remote signal input system |
| US9213446B2 (en) * | 2009-04-16 | 2015-12-15 | Nec Corporation | Handwriting input device |
| US8624875B2 (en) * | 2009-08-24 | 2014-01-07 | Semiconductor Energy Laboratory Co., Ltd. | Method for driving touch panel |
| US8576182B2 (en) * | 2009-09-01 | 2013-11-05 | Atmel Corporation | Methods and apparatuses to test the functionality of capacitive sensors |
| EP2485127A4 (en) | 2009-09-30 | 2014-07-30 | Sharp Kk | Display device |
| CN102511022B (en) * | 2009-09-30 | 2014-10-29 | 夏普株式会社 | Display device |
| US20120262424A1 (en) * | 2009-09-30 | 2012-10-18 | Sharp Kabushiki Kaisha | Display Device |
| KR101073194B1 (en) * | 2009-10-06 | 2011-10-12 | 삼성모바일디스플레이주식회사 | Liquid Crystal Display with a Built-in Touch Screen |
| KR101073345B1 (en) * | 2009-10-06 | 2011-10-14 | 삼성모바일디스플레이주식회사 | Liquid Crystal Display with a Built-in Touch Screen |
| KR101887837B1 (en) | 2009-12-18 | 2018-08-10 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | Display device including optical sensor and driving method thereof |
| KR101889382B1 (en) * | 2010-01-20 | 2018-08-17 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | Electronic device and electronic system |
| KR101669964B1 (en) * | 2010-02-02 | 2016-10-28 | 삼성디스플레이 주식회사 | Touch screen substrate and method of manufacturing the same |
| DE112011100886T5 (en) * | 2010-03-12 | 2012-12-27 | Semiconductor Energy Laboratory Co., Ltd. | Driving method for display device |
| TWI544458B (en) * | 2010-04-02 | 2016-08-01 | 元太科技工業股份有限公司 | Display panel |
| KR101812099B1 (en) * | 2010-08-25 | 2017-12-28 | 삼성디스플레이 주식회사 | Sensor array substrate, display device comprising the same |
| US20120218417A1 (en) * | 2011-02-28 | 2012-08-30 | Ford Global Technologies, Llc | Short throw ratio fluorescent color video display device |
| US9746760B2 (en) * | 2011-02-28 | 2017-08-29 | Ford Global Technologies, Llc | Video display with photo-luminescent dyes |
| KR101874034B1 (en) | 2012-02-10 | 2018-07-06 | 삼성디스플레이 주식회사 | Optical sensor, display device including the same and driving method thereof |
| KR101931676B1 (en) | 2012-03-23 | 2018-12-24 | 삼성디스플레이 주식회사 | Photo sensor, display device including the same and driving method thereof |
| CN102832222B (en) * | 2012-07-26 | 2014-12-10 | 北京京东方光电科技有限公司 | Sensor and manufacture method thereof |
| CN103677357B (en) * | 2012-09-06 | 2016-12-28 | 宸鸿科技(厦门)有限公司 | For the covering plate structure of contact panel and manufacture method thereof and contact panel |
| US20140098063A1 (en) * | 2012-10-10 | 2014-04-10 | Research In Motion Limited | Electronic device with proximity sensing |
| TWI498791B (en) * | 2012-12-27 | 2015-09-01 | Toppan Printing Co Ltd | Liquid crystal display device, color filter substrate, and color filter substrate manufacturing method |
| CN103984455A (en) * | 2014-04-06 | 2014-08-13 | 浙江科创新材料科技有限公司 | Extensional physical touch control press key realizing method based on capacitive touch screen, capacitive touch screen using method and capacitive touch screen system |
| US9741286B2 (en) | 2014-06-03 | 2017-08-22 | Apple Inc. | Interactive display panel with emitting and sensing diodes |
| US9570002B2 (en) * | 2014-06-17 | 2017-02-14 | Apple Inc. | Interactive display panel with IR diodes |
| US9736906B2 (en) * | 2014-09-25 | 2017-08-15 | Intel Corporation | Control mechanism and method using RGB light emitting diodes |
| KR102389626B1 (en) * | 2014-12-11 | 2022-04-25 | 삼성디스플레이 주식회사 | Display panel and organic light emitting display device including an display panel |
| CN106231385B (en) * | 2016-07-21 | 2019-08-23 | 京东方科技集团股份有限公司 | Display device and display system |
| JP7274284B2 (en) | 2018-12-21 | 2023-05-16 | 株式会社ジャパンディスプレイ | detector |
| EP3935444A1 (en) * | 2019-03-08 | 2022-01-12 | Array Photonics, Inc. | Electronic devices having displays with infrared components behind the displays |
| TWI712027B (en) * | 2019-03-28 | 2020-12-01 | 友達光電股份有限公司 | Display panel |
| CN111430414A (en) * | 2020-03-31 | 2020-07-17 | 京东方科技集团股份有限公司 | O L ED display panel, preparation method and display device |
| CN112018157B (en) * | 2020-08-05 | 2022-05-31 | 武汉华星光电技术有限公司 | Display device |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3206312A1 (en) * | 1982-02-22 | 1983-09-01 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | DEMULTIPLEXER PHOTODIOD |
| US5149956A (en) * | 1991-06-12 | 1992-09-22 | Santa Barbara Research Center | Two-color radiation detector array and methods of fabricating same |
| US5453611A (en) * | 1993-01-01 | 1995-09-26 | Canon Kabushiki Kaisha | Solid-state image pickup device with a plurality of photoelectric conversion elements on a common semiconductor chip |
| US5373182A (en) * | 1993-01-12 | 1994-12-13 | Santa Barbara Research Center | Integrated IR and visible detector |
| US5592124A (en) * | 1995-06-26 | 1997-01-07 | Burr-Brown Corporation | Integrated photodiode/transimpedance amplifier |
| JPH0946772A (en) * | 1995-07-31 | 1997-02-14 | Rohm Co Ltd | Light detection, optical detector using the same and electronic equipment equipped with the detector |
| JP2000347633A (en) * | 1999-03-31 | 2000-12-15 | Sharp Corp | Optical control element and its driving method |
| JP3959454B2 (en) * | 2001-10-22 | 2007-08-15 | シャープ株式会社 | Input device and input / output device |
| JP2004006694A (en) * | 2002-03-29 | 2004-01-08 | Toshiba Corp | Light receiving element and optical semiconductor device |
| JP2005275644A (en) * | 2004-03-24 | 2005-10-06 | Sharp Corp | Liquid crystal display |
| JP4645822B2 (en) * | 2005-04-19 | 2011-03-09 | ソニー株式会社 | Image display device and object detection method |
| JP2006332226A (en) * | 2005-05-25 | 2006-12-07 | Toshiba Corp | Semiconductor photosensor device |
| US7532181B2 (en) * | 2005-07-20 | 2009-05-12 | Eastman Kodak Company | Visible and invisible image display |
| JP4901320B2 (en) * | 2006-06-13 | 2012-03-21 | 三菱電機株式会社 | 2-wavelength image sensor |
| JP4567028B2 (en) * | 2006-09-26 | 2010-10-20 | エルジー ディスプレイ カンパニー リミテッド | Liquid crystal display device having multi-touch sensing function and driving method thereof |
| JP4356026B2 (en) * | 2006-10-10 | 2009-11-04 | ソニー株式会社 | Display device, light receiving method, and information processing device |
| JP2008241807A (en) | 2007-03-26 | 2008-10-09 | Seiko Epson Corp | Liquid crystal device and electronic equipment |
| JP4867766B2 (en) * | 2007-04-05 | 2012-02-01 | セイコーエプソン株式会社 | Liquid crystal device, image sensor, and electronic device |
| US8089476B2 (en) * | 2007-08-01 | 2012-01-03 | Sony Corporation | Liquid crystal device |
| JP4404927B2 (en) * | 2007-10-10 | 2010-01-27 | シャープ株式会社 | Display system and indication position detection method |
| US20090141004A1 (en) * | 2007-12-03 | 2009-06-04 | Semiconductor Energy Laboratory Co., Ltd. | Display device and method for manufacturing the same |
| JP5058046B2 (en) * | 2008-03-31 | 2012-10-24 | 三菱電機株式会社 | Display device with built-in optical sensor |
| US7883916B2 (en) * | 2008-05-30 | 2011-02-08 | International Business Machines Corporation | Optical sensor including stacked photosensitive diodes |
-
2008
- 2008-05-22 JP JP2008134374A patent/JP5175136B2/en not_active Expired - Fee Related
-
2009
- 2009-04-14 US US12/423,395 patent/US8446390B2/en not_active Expired - Fee Related
- 2009-05-19 KR KR1020090043424A patent/KR101587284B1/en active IP Right Grant
- 2009-05-21 CN CN200910203459.0A patent/CN101587256B/en not_active Expired - Fee Related
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8994693B2 (en) | 2009-11-16 | 2015-03-31 | Pixart Imaging Inc. | Locating method of optical touch device and optical touch device |
| CN102652279A (en) * | 2009-12-09 | 2012-08-29 | 夏普株式会社 | Display device |
| CN102652279B (en) * | 2009-12-09 | 2014-11-19 | 夏普株式会社 | Display device |
| CN102129326A (en) * | 2010-01-19 | 2011-07-20 | 原相科技股份有限公司 | Positioning method for optical touch device and optical touch device |
| US9459721B2 (en) | 2013-06-26 | 2016-10-04 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Active matrix organic light emitting diode pixel unit circuit, display panel and electronic product |
| US9535531B2 (en) | 2013-06-26 | 2017-01-03 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Active matrix organic light emitting diode pixel unit circuit, display panel and electronic product |
| WO2014205931A1 (en) * | 2013-06-26 | 2014-12-31 | 京东方科技集团股份有限公司 | Active-matrix organic light-emitting diode pixel unit circuit, display panel, and electronic product |
| US9530354B2 (en) | 2013-06-26 | 2016-12-27 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Active matrix organic light emitting diode pixel unit circuit and display panel |
| US9501170B2 (en) | 2013-07-01 | 2016-11-22 | Boe Technology Group Co., Ltd. | Pixel circuit, display device, and method for driving pixel circuit |
| US10013114B2 (en) | 2014-08-26 | 2018-07-03 | Boe Technology Group Co., Ltd. | Light touch panel, light touch display screen and light touch display device |
| WO2016029556A1 (en) * | 2014-08-26 | 2016-03-03 | 京东方科技集团股份有限公司 | Optical touch panel, optical touch display screen, and optical touch display apparatus |
| CN104238832A (en) * | 2014-08-26 | 2014-12-24 | 合肥鑫晟光电科技有限公司 | Light touch panel, light touch display screen and light touch display device |
| CN104238832B (en) * | 2014-08-26 | 2017-12-08 | 合肥鑫晟光电科技有限公司 | A kind of smooth touch panel, light touch display screen and light touch display unit |
| CN104375720A (en) * | 2014-11-26 | 2015-02-25 | 昆山国显光电有限公司 | Touch screen device |
| CN106210461A (en) * | 2015-05-29 | 2016-12-07 | 精工爱普生株式会社 | Camera head, the control method of camera head |
| WO2020062781A1 (en) * | 2018-09-29 | 2020-04-02 | Boe Technology Group Co., Ltd. | Method for detecting biometric information, biometric sensor, and display apparatus |
| US11756330B2 (en) | 2018-09-29 | 2023-09-12 | Boe Technology Group Co., Ltd. | Biometric sensor, display apparatus, and method for detecting biometric information |
| CN111179865A (en) * | 2018-11-13 | 2020-05-19 | 咸阳彩虹光电科技有限公司 | Display panel and display method |
| CN111179865B (en) * | 2018-11-13 | 2022-07-29 | 咸阳彩虹光电科技有限公司 | Display panel and display method |
| TWI761972B (en) * | 2019-09-30 | 2022-04-21 | 南韓商樂金顯示科技股份有限公司 | Display device |
| US11482590B2 (en) | 2019-09-30 | 2022-10-25 | Lg Display Co., Ltd. | Display device with alternately arranged circuit areas and sub-pixels |
| WO2022007094A1 (en) * | 2020-07-08 | 2022-01-13 | 深圳市华星光电半导体显示技术有限公司 | Display device and control method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101587284B1 (en) | 2016-01-20 |
| JP2009282303A (en) | 2009-12-03 |
| JP5175136B2 (en) | 2013-04-03 |
| US8446390B2 (en) | 2013-05-21 |
| KR20090122127A (en) | 2009-11-26 |
| CN101587256B (en) | 2013-09-11 |
| US20090289910A1 (en) | 2009-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101587256B (en) | Electro-optical device and electronic apparatus | |
| CN101281313B (en) | Liquid crystal device, image sensor, and electronic apparatus | |
| TWI399582B (en) | Liquid crystal display apparatus | |
| JP5014971B2 (en) | Display device | |
| KR101521096B1 (en) | Display device | |
| TWI403800B (en) | Display device | |
| JP4924393B2 (en) | Display device | |
| CN101960372B (en) | Display device with photosensor | |
| CN101315476B (en) | Liquid crystal device and electronic apparatus | |
| US20070268206A1 (en) | Image display device | |
| KR20080028270A (en) | Liquid crystal display having multi-touch sensing function and driving method thereof | |
| CN102576164A (en) | Light sensor and display device | |
| KR20070081428A (en) | Display | |
| US20090279029A1 (en) | Liquid crystal display | |
| CN100443969C (en) | Touch control faceplate, and fabricating method | |
| CN101911159A (en) | Display device with light sensors | |
| KR20080028208A (en) | Liquid crystal display having multi-touch sensing function and driving method thereof | |
| CN209327746U (en) | Display screen component and electronic equipment | |
| CN102282532A (en) | Area sensor and liquid crystal display device with area sensor | |
| CN102282503A (en) | Liquid crystal display device | |
| CN111240062B (en) | Liquid crystal display screen integrating fingerprint identification function and electronic device | |
| JP2011107454A (en) | Display device | |
| JP2009134041A (en) | Display device | |
| JP5239293B2 (en) | Liquid crystal device and electronic device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: NANKAI UNIVERSITY Free format text: FORMER OWNER: SEIKO EPSON CORP. Effective date: 20110616 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20110616 Address after: Tokyo, Japan Applicant after: Sony Corp. Address before: Tokyo, Japan Applicant before: Seiko Epson Corp. |
|
| ASS | Succession or assignment of patent right |
Owner name: NIPPON DISPLAY CO., LTD. Free format text: FORMER OWNER: SONY CORPORATION Effective date: 20121105 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20121105 Address after: Aichi Applicant after: Japan display West Co.,Ltd. Address before: Tokyo, Japan Applicant before: Sony Corp. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20210521 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |